Hi, the purpose of the various scale factors has not changed - what is new is that we added a blunder detection check onto the Job Defaults screen, which will alert you if any of the scale factors don't match up.

For those who do grid-ground scaling this can be an easy source of error so the warning was added.

If you want to disable these warnings, go to MsTools | MicroSurvey System Toggles - on the Dialogs tab, uncheck the "Perform Scale Factor Check" option.